Further insights into the thermodynamics of linear carbon chains for temperatures ranging from 13 to 300 K.

ABSTRACT: It was recently shown that small bundles of linear carbon chains (LCC) encapsulated by double- and multi-wall carbon nanotubes (LCC@DWCNT and LCC@MWCNT, respectively) behave as Debye's materials for temperatures as high as 293 K with an estimate that such materials could still withstand such characteristics for even higher temperatures (≈700 K). Using the Debye model, thermodynamic observables (internal energy, coefficient of linear thermal expansion, specific heat, thermal strain, and Grüneisen parameter at constant pressure) were empirically determined for the first time in the range of temperatures 70 < T < 293 K. These observables were all correlated with the C-band frequency (ω_LCC) dependence on the temperature (T) and its first and second derivatives with rel

SUBMITTER: Paschoal AR 

PROVIDER: S-EPMC12557416 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature